Land use
Energy
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BIOFUEL
BIOMASS
COAL
ISOTOPES
KEROGEN
MAGMA
MELTDOWN
MINERAL
NATURAL
REMOVAL
RESOURCE
RESOURCES
| K | D | S | C | B | W | R | K | S |
| S | N | E | S | I | L | D | E | L |
| L | W | P | S | O | W | C | R | A |
| A | O | O | A | F | R | M | O | R |
| V | D | T | M | U | C | A | G | U |
| O | T | O | O | E | P | G | E | T |
| M | L | S | I | L | A | M | N | A |
| E | E | I | B | C | O | A | L | N |
| R | M | I | N | E | R | A | L | Z |
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